In persistent atrial fibrillation ablation, mapping substrate on both anterior and posterior walls before pulmonary vein isolation (PVI) is essential, as substrate may exist outside the pulmonary veins; real-time contact feedback systems (like the Volt™ system) help ensure proper electrode contact during cryo procedures, with visual indicators showing ideal contact (blue bars), partial contact (bars moving out of inner ring), or poor contact (minimal bar movement).
Deep Dive
Prerequisite Knowledge
- No data available.
Where to go next
- No data available.
Deep Dive
Not every persistent AF case stops at PVI ⚡Added:
So this patient as Dr. Waheed mentioned, never had an ablation before.
But we kind of had the feeling older women woman small person, she might have have some substrate and I just going to share with you how our workflow in this patient is. So as I said, this is not my workflow normally. Normally we would go mapping on the fly. So do the veins and just map while we're doing it. In this case, we did a little bit of mapping before. As you can see, we could detect some substrate on the anterior wall and also on the posterior wall. And you guys can already already think about what should be tackled after doing the PVIs because in this patient we might even tackle substrate outside the pulmonary veins.
So but having said that, I'm going to start with the left superior pulmonary vein. Now you can see the wire is already in the left superior vein. Now what you want to achieve with the balloon here, accordingly to cryo procedures, you want to have good contact. And in this ball technology, you kind of have a circle that indicates you if your electrodes are in good contact, poor contact or no contact at all. You see those blue bars, which means like ideal contact. Then you have some bars moving out of the second inner ring.
That also indicates you that these electrodes are in contact. And depending on respiration, sometimes our patient is in deep analgo-sedation, they also turn blue and there are maybe two electrodes, actually just one electrode, electrode number two, which has I would say poor contact because the bar is almost not moving at all.
Related Videos
3 Reasons Eating Meat Will Kill You?
Professor-Bart-Kay-Nutrition
1K views•2026-05-28
Group launches palliative care training campaign – May 29, 2026
cpac
593 views•2026-05-29
🍉 Benefits of Watermelon During Pregnancy | Healthy Fruit for Mom & Baby #medicoabhijit #healthymum
medicoabhijit_br
1K views•2026-05-30
7 Sneaky Attacks on Women's Womb Health You Never See Coming
DrBobbyPrice
1K views•2026-05-29
#shorts | First Guess of Brain Stroke? | Dr Manoj Vasireddy | Neurology | Sri Sri Holistic Hospitals
SriSriHolisticHospitals
103 views•2026-05-28
Whether you have chronic infections or mystery symptoms, Evvy’s Vaginal Health test can help you
evvybio
584 views•2026-06-01
Beyond Liver Disease: The Hidden Role of Protein in CLD Recovery | Dr. Karan Jain & Ms. Reshma Aleem
VoiceofHealthcare
420 views•2026-05-29
#Marsupialization of Urinary bladder for recurring cystorrhaphy leakage in a dog/#cystoliths/#rbk
drrbkushwaha
446 views•2026-05-29











